If you had that file in your C:\Documents and Settings\your name\My Documents\Electronic Arts\The Sims 3\DCBackup folder, this may have attached itself to your exports. If you had that file and recently exported content to your Launcher, delete that content from your Export folder and your Launcher.

Before installing an Update for The Sims 3, an Expansion Pack, or a Stuff Pack, it is a good idea to run through the following checklist to ensure your game continues to work smoothly.

Custom Content is all Sims content that did not come from an official The Sims 3 Update, The Sims 3 Store, Expansion Pack, or Stuff Pack. Custom Content is created by 3rd Party Developers that are not regulated by Electronic Arts or The Sims 3 Development Team and may not work with new updates. Custom Content may cause the game to behave unexpectedly or not function entirely.